Google Arts & Culture Collection (over 57,000 images)

Explore collections from around the world with Google Arts & Culture, created by Google Cultural Institute. Google has signed partnership agreements with 151 institutions in 2012 and the Art Project has grown since then to include over 57,000 digital representations of famous (and not-so-famous) works of art.

LINK: https://www.google.com/culturalinstitute/beta/